Abstract
In order to clarify the effect of strain rate on the mechanical properties of textile composites, plain woven carbon fiber/epoxy composites were tensile tested with a hydraulic testing machine. The actuator speeds were selected as 0.5mm/min, 0.01, 0.1, 1.0 and 10m/s, which result in the strain rate ranges of 5×10^<-5>, 5×10^<-2>, 5×10^<-1>, 10^1, and 5×10^1s^<-1> , respectively. Experimental results indicated that the modulus of elasticity and the tensile strength increased at the strain rate more than about 10^1s^<-1> . The specimens after tensile tests were observed with SEM. The results indicated that resin exists around the fibers at the strain rate more than about 10^1s^<-1>. It was suggested that interfacial strength increased with increasing strain rate.
